The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-275-0378, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies, Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-275-0378 |
| Primary Part Number | 100429-5 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | EF43-3 REP. 5370,EDO CORP MFR REF SINGLE TREATMENT RESPONSE |
| Body Outside Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.129 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.560 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 630 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 100429-5 PRIMARY | L3harris Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 100429-5 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-275-0378 is a Retainer,helical Compression Spr, manufactured by L3harris Technologies, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-275-0378 has 1 manufacturer part number on file: 100429-5 (L3harris Technologies, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-398-2004. Verify interchangeability with system specifications before substitution.
Key specifications for 100429-5: Overall Height: 0.300 INCHES NOMINAL IN; Surface Treatment Document and Classification: EF43-3 REP. 5370,EDO CORP MFR REF SINGLE TREATMENT RESPONSE; Body Outside Diameter: 1.000 INCHES NOMINAL IN; Style Designator: IRREGULAR. 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.